Honolulu is planning to take sand from a Kailua stream and spread it out along part of Kailua Beach that has been eroding in recent years.

The beach will be closed from the boat ramp to Kaelepulu Stream from 7 a.m. to 6 p.m. Monday through Friday for the project. 

It’s not clear why this section of Kailua Beach has been eroding.

A change in wind patterns, high surf, and other factors can lead to erosion.

Sand being pushed into the mouth of Kaelepulu Stream by ocean waves may also be a factor. 

The stream can carry sand back out to the ocean when there’s heavy runoff, but a dike built in the 1980s has been diverting some of the stream’s water to another canal.